Saturday, January 8, 2011

It's Elementary my dear Watson

An ionic bond (or electrovalent bond) is a type of chemical bond that can often form between metal and non-metal ions (or polyatomic ions such as ammonium) through electrostatic attraction. In short, it is a bond formed by the attraction between two oppositely charged ions.

The metal donates one or more electrons, forming a positively charged ion or cation with a stable electron configuration. These electrons then enter the non metal, causing it to form a negatively charged ion or anion which also has a stable electron configuration. The electrostatic attraction between the oppositely charged ions causes them to come together and form a bond.

Remember Robin Hood? The Sheriff of Nottingham?

Here you find a video about every element on the periodic table, COOL!

For the chemistry review video it say "not only the tendence of chemistry from the states of mater to the law of thermal dynamics usefull in scientific circles but are used in a wide range of automotive industries and also cooking" what does that mean -thanks jake yellow

hello mr.v i have been absent. I will be at school tom and i was wondering that if the quiz will be an open notebook or not? I have something on my progress log for you to grade should i just have my parents sign it and attach the work to my progress log or have you grade it then turn it in?? Sabrina/yellow

Mr. V, I watched a video on potassium, and I thought it was very cool, and helpful on information on what happens when you mix it with sodium. I took the first quiz for kids and got all of them right. Then I took the second quiz, and I did a combination of levels on that game. I wasn't completely horrible at it, but I wasn't good either. I took the third quiz and got 12 out of 21. I think the last few I got wrong because of spelling errors, but I feel rather unintelligent at the moment. I failed a 7th grade quiz. I should be ashamed of myself. I am now going to research the rest of the things on this quiz so that I can recieve a Hundred percent on each of them.Other than that I found this blog relatively helpful. I have a few question though on the content of the slide thing. I will put them in my next post in a half an hour approximatly.

My first question: what is a electrochemicaltransfer of signals in the nervous system? I know it has something to do with what or how your body signals things to other systems in the body but it confuses me. My secend question: what is silenium?

I really don't understand the rest of it either, other than the fact that DNA is made of 4 components.

Selenium is a trace mineral that is essential to good health but required only in small amounts. Selenium is incorporated into proteins to make tha are important antioxidant enzymes. The "selenoproteins" help prevent cellular damage that may contribute to the development of chronic diseases such as cancer and heart disease.

thank you for the quizes because now i know i ned to work on knowing which one are metal or non-metal elements and for the peridoic table videos i learned a little more about calcium like evn shells are made out of it so thanks again-jake yellow

Mr V, I had lost the rubric for our element project somehow and i need it for the rest of my project. Do you have a link of the rubric that i could use and print out for my element? Thanks. This would be a big help.

Mr. V, jeremy and I would like to know if possible when our presentation on potassium will be because we made specific shirts for our presentation and we wan't to be sure to wear them.Thank youSavanah Yellow

Sherlock If anyone needs help with the periodic table?If so read on. ( think about what we're studying in Mr. Nevins class 4.3 especially)

Helium, Neon,Argon, Krypton, Xenon, Radon, and Ununoctium They're the plantation owners(noble gases) and self-sufficient.Independent small farmers(Metals) aren't self sufficient and need help to be whole. Nonmetals are immigrants that aren't considered high in society, but are still regarded. Slaves(transitional) aren't considered fully human(closer to animals) so they don't fit in with anyone. Sherlock/yellow P.S. Hope this helps and I couldn't figure out who the Lanthanide and Actinide Series could be

Skills Activity page 161Remember, Bromine is in the same group as Fluorine - so it will form an ion with the same charge as fluoride. Pair up positive and negative ions in RATIOS that result in neutral ionic compounds: NaBr, Li2O, MgS, AlF3, KNO3, NH4Cl. (subscripts don't show in comments section)